linux-kernel - [PATCH 0/2] irqchip/genirq/msi: Use irq_domain_alloc

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Message-Id: <20221213140844.15470-1-johan+linaro@kernel.org>
Date:   Tue, 13 Dec 2022 15:08:42 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>
Cc:     Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>, asahi@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 0/2] irqchip/genirq/msi: Use irq_domain_alloc_irqs()

When reworking the irqdomain locking I noticed that we had quite a few
users of the __irq_domain_alloc_irqs() interface which was initially
only intended for some legacy x86 use cases.

This first patch updates the irqchip driver so that the
irq_domain_alloc_irqs() wrapper is instead used consistently.

The second patch adds a matching irq_domain_alloc_irqs_affinity() helper
which can be used when an affinity hint needs to be provided and updates
the sole user.

With this update to gpiolib:

	https://lore.kernel.org/lkml/20221213135227.14398-1-johan+linaro@kernel.org

the only remaining users of the full interface (with preallocated
descriptors) are the two original calls in x86/io_apic and the later
added one for IPI.

Johan


Johan Hovold (2):
  irqchip: Use irq_domain_alloc_irqs()
  genirq/irqdomain/msi: Add irq_domain_alloc_irqs_affinity() wrapper

 drivers/irqchip/irq-apple-aic.c     |  5 ++---
 drivers/irqchip/irq-armada-370-xp.c |  4 ++--
 drivers/irqchip/irq-bcm2836.c       |  6 ++----
 drivers/irqchip/irq-gic-v3.c        |  5 ++---
 drivers/irqchip/irq-gic-v4.c        | 10 ++++------
 drivers/irqchip/irq-gic.c           |  5 ++---
 include/linux/irqdomain.h           | 15 +++++++++++++++
 kernel/irq/msi.c                    |  6 +++---
 8 files changed, 32 insertions(+), 24 deletions(-)

-- 
2.37.4